CN206110155U - Open caisson secondary back cover structure - Google Patents
Open caisson secondary back cover structure Download PDFInfo
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- CN206110155U CN206110155U CN201621123258.1U CN201621123258U CN206110155U CN 206110155 U CN206110155 U CN 206110155U CN 201621123258 U CN201621123258 U CN 201621123258U CN 206110155 U CN206110155 U CN 206110155U
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- shell
- inner bag
- open caisson
- back cover
- wall
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Abstract
The utility model relates to an open caisson secondary back cover structure solves that traditional open caisson adopts once to sink, the structure of shaft bottom back cover, and it is big that sinking process adjusts the degree of difficulty, and the back cover construction is complicated, and construction quality receives the problem of shaft bottom environmental impact easily. This structure is including burying shell and the inner bag at the below ground underground, the shell is the straight tube -shape of upper and lower open -ended, and the inner bag is the tube -shape, and the inner bag lateral wall is unanimous with shell inner wall shape and leave the clearance, and the inner bag top is open, the bottom is equipped with the bottom plate, and the clearance slip casting between shell and the inner bag is concretied and is formed the bonding layer. The utility model discloses it is thin that the outer thimble wall of open caisson sinks the wall than ordinary open caisson, is favorable to control to be sunk, the assembling reinforcement of open caisson the bottom of the inner shell, and concreting sinks after reserving the mud hole, the back on earth that sinks, slip casting is solidified between the inner/outer casing, prevents assembling reinforcement in the mud, concreting, ensures the quality of products.
Description
Technical field
This utility model belongs to building engineering field, is related to a kind of open caisson construction structure, and more particularly to a kind of open caisson is secondary
Back cover structure.
Background technology
Open caisson is the works of pit shaft shape, and it is, to cut the earth in well, to overcome by self gravitation and sink after borehole wall frictional resistance
To designed elevation, then through concrete sealing bottom and wellhole is clogged so as to become the basis of Bridge Pier or other structures thing.One
As construction Bridge Piers foundation ditch, sewage pumping station, large equipment base, people's air defense shelter, shield assembly well, underground roadways with
Use during the water conservancy project foundation construction enclosure device of station.
Traditional open caisson is a sunk type, the CN 03343544A as disclosed in 09 day October in 2013 of Patent Office of the People's Republic of China
A kind of number patent, entitled construction method of large-scale well-sinking, the method includes jet grouting pile construction, open caisson manufacture, well sinking, envelope
The construction procedures such as bottom.A sunk type is used in said method work progress, using back cover structure after well-sinking.The knot
The borehole wall is thicker when structure is constructed, and control difficulty of sinking is big, is difficult to adjust, and during back cover, needs workmen to go deep into shaft bottom and is tied up
Reinforcing bar, difficulty of construction is big in mud, and if there are hydrops in shaft bottom during casting concrete, easily affect construction quality.
The content of the invention
The purpose of this utility model is to solve traditional open caisson using once sinking, the structure of shaft bottom back cover, is sunk
Journey adjusts difficulty greatly, and back cover construction is complicated, a kind of problem that construction quality is easily affected by downhole environment, there is provided open caisson two
Secondary back cover structure.
This utility model solves the technical scheme that its technical problem adopted：A kind of open caisson secondary bottom sealing structure, it is special
Levy and be：Including the shell and inner bag that are embedded in below ground, the shell is the straight-tube shape of upper and lower opening, and inner bag is tubular,
Side wall of inner is consistent with outer casing inner wall shape and leaves gap, and inner bag open-top, bottom have poured in advance to be fixed with inner bag bottom
The base plate of one, the gap grouting reinforcement between shell and inner bag forms bonding course.After shell first sinks in place, inside the housing
Inner bag sinking construction is carried out, open caisson point two parts are sunk.Open caisson shell barrel is thinner than common well sinking wall, is conducive to sinking
During control, open caisson inner shell bottom assembling reinforcement, now by the bottom slab concreting of concrete complete then sink, sink to bottom
Afterwards, grouting reinforcement between inside and outside shell, it is to avoid assembling reinforcement, casting concrete in mud, it is ensured that construction quality.
Preferably, the base plate of the inner bag is provided with mud hole, the mud hole adopts concrete enclosing.Base plate is reserved
Mud hole sinks, and the water energy in sinking watching in well reduces penetration resistance by mud hole.
Preferably, the bottom surface of the inner bag is concordant with the bottom surface of shell, the top surface of the inner bag is put down with the top surface of shell
Together.
Preferably, the bottom of the shell is provided with cutting shoe.
A kind of construction method of open caisson secondary bottom sealing structure, comprises the following steps：
A, shell sink down into designed elevation；
B, inner bag carry out sinking down into designed elevation inside the housing, and mud hole is reserved on base plate for the hydrops stream on the inside of shell
Enter inner bag；
Grouting reinforcement is carried out between c, shell and inner bag；
The mud hole of d, closing interior plate.
This utility model open caisson shell barrel is thinner than common well sinking wall, is conducive to sinking control, open caisson inner shell bottom
Assembling reinforcement, casting concrete reserved and sink behind mud hole, after sinking to bottom, grouting reinforcement between inside and outside shell, in preventing mud
Assembling reinforcement, casting concrete, it is ensured that quality.
Description of the drawings
This utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is open caisson secondary bottom sealing structural representation of the present utility model.
Fig. 2 is shell sinking watching schematic diagram of the present utility model.
Fig. 3 is that shell of the present utility model sinks to bottom schematic diagram.
Fig. 4 is inner bag sinking watching schematic diagram of the present utility model.
Fig. 5 is that inner bag of the present utility model sinks to bottom schematic diagram.
In figure：1st, shell, 2, cutting shoe, 3, inner bag, 4, base plate, 5, mud hole, 6, bonding course.
Specific embodiment
Below by specific embodiment and combine accompanying drawing this utility model is further illustrated.
Embodiment：A kind of open caisson secondary bottom sealing structure, as shown in Figure 1.This device includes being embedded in the shell 1 of below ground
With inner bag 3, the shell is the straight-tube shape of upper and lower opening, and the bottom of shell is provided with cutting shoe 2.Inner bag is tubular, inner bag lateral wall
It is consistent with outer casing inner wall shape and leave gap, inner bag open-top, bottom be provided be cast in inner bag bottom and with inner bag one
Base plate 4, base plate is provided with mud hole, and mud hole 5 sinks to bottom rear enclosed in inner bag.Gap slip casting between shell and inner bag
Consolidation forms bonding course 6.
A kind of construction method of open caisson secondary bottom sealing structure, as shown in Figure 2-5.Comprise the following steps：
A, shell sink down into designed elevation；
B, inner bag carry out sinking down into designed elevation inside the housing, and mud hole is reserved on base plate for the hydrops stream on the inside of shell
Enter inner bag；
Grouting reinforcement is carried out between c, shell and inner bag；
The mud hole of d, closing interior plate.
Drawn water before grouting reinforcement in step c.Close in step d and drawn water before interior plate.
Open caisson shell barrel is thinner than common well sinking wall, is conducive to the control in sinking watching, open caisson inner shell bottom to tie up
Wire-tie, now the bottom slab concreting of concrete is completed and then sunk, after sinking to bottom, grouting reinforcement between inside and outside shell, it is to avoid
Assembling reinforcement, casting concrete in mud, it is ensured that construction quality.
Claims (4)
1. a kind of open caisson secondary bottom sealing structure, it is characterised in that：Including the shell and inner bag that are embedded in below ground, the shell
For the straight-tube shape of upper and lower opening, inner bag is tubular, and side wall of inner is consistent with outer casing inner wall shape and leaves gap, and inner bag top is opened
Put, bottom pours in advance the base plate being fixed as one with inner bag bottom, the gap grouting reinforcement between shell and inner bag forms consolidation
Layer.
2. a kind of open caisson secondary bottom sealing structure according to claim 1, it is characterised in that：The base plate of the inner bag is provided with
Mud hole, the mud hole adopts concrete enclosing.
3. a kind of open caisson secondary bottom sealing structure according to claim 1, it is characterised in that：The bottom surface of the inner bag and shell
Bottom surface it is concordant, the top surface of the inner bag and the either flush of shell.
4. a kind of open caisson secondary bottom sealing structure according to claim 1 or 2 or 3, it is characterised in that：The bottom of the shell
It is provided with cutting shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123258.1U CN206110155U (en) | 2016-10-14 | 2016-10-14 | Open caisson secondary back cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123258.1U CN206110155U (en) | 2016-10-14 | 2016-10-14 | Open caisson secondary back cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206110155U true CN206110155U (en) | 2017-04-19 |
Family
ID=58529463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621123258.1U Active CN206110155U (en) | 2016-10-14 | 2016-10-14 | Open caisson secondary back cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206110155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023026A (en) * | 2017-06-02 | 2017-08-08 | 中国矿业大学 | A kind of sealing bottom type caisson wall and construction method |
-
2016
- 2016-10-14 CN CN201621123258.1U patent/CN206110155U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023026A (en) * | 2017-06-02 | 2017-08-08 | 中国矿业大学 | A kind of sealing bottom type caisson wall and construction method |
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